wilson



l. H. WILSON, G. W. DIXON AND W. E. McLAUGHLIN. METAL wonma MAcHmE.

1,313,365. APPLICATIUII FILED OCT. l0. 191B. Panted Aug. 19,

l SHEETS-SHEET l.

Witness: Inventors Attorney l. H. WILSON, G. W. DIXON AND W. E.McLAUGHLIN.

' nim wonxms mcHme.

APiLICATON FILED (ICT- IO. W18.

Patented Aug. 19, 1919.

Mula Ufludm [h1 6U S 5g,

Attorney 1. H. wlLsoN. G. w. mxoN Arm w, E. McLAuGHLm.

METAL WORKING MAOHINE.

APPLICATION fILED 06T. I0. |918.

41 ,313,365. Patented Aug. 19,1919.

l SHEETS-SHEET 3 Jau/vh George W10/'Xen WIV/iamfor/ "La #lin xtness:nve'gtors m www w. s

' F9 M Attorney J. l'l. WILSON, GfW. DIXON AND W. E. McLAUGlLIN.

usm wonnlus mcnme. 1,313,365. APPLICATION FILID 06T I0 HI8 Panted Aug.19

l l SHEETS-.MEET 4.

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Witne M l. H. WILSON, G. W. DIXON AND W. E. McLAUGHLIN. METAL WORKINGMACHINE. Arriicmox msn ocr. 1o. mn.

1 ,313.365, Patnd Ang. 19,1919.

s SHEETS-suur a.

l. H. WlLSON, G. W. DIXON AND W. E.-McLAUGHLIN. msm womums mcnme.

MWLICATIGII FILID DCT l0. IMB- Patented 19 1,3 n sums-snm c MII-lil@eolie ixon W//f'l/r/fdr/ /VL Mh Wltness: Inven Ors MUM l, ,M ausw,

Attorney l. H. WILSON, G. W. DIXON AND W. E. McLAUGHLIN.

METM. WURKING MACHINE.

APPucmcn mio ocr. no. Isls.

` 1,313,365. Patented Aug. 19,1919. 9 SHEETS-SHEET I.

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Attorney J. I-I. WILSON, G. W. DIXON AND W. E. McLAUGHLIN. METAL WORKINGMACHINE. ArPucArlon mso 061.10. i919.

1 ,313,365. Panwd Ang. 19, 1919.

B SHEETS-SHEET Il.

F/a 2.3. Fm 24. F/a 29g' Attorney UNITED sTATEs PATENT OFFIOE.

JOSEPH H. WILSON, GEORGE W. DIXON, AN D WILLIAM EARL`MOLAUGI-IIIN, 0F

MIDDLETOWN, OHIO, ASSIGNOES T0 'II-IE AMERICAN ROLLING MILL COM- PNY, 0FMIDDLETOW'N, OHIO.

- METAL-WORKING- MACHINE.

specification of Letters Patent.

Patented Aug. 19, 1919.

Application led October 10, 1918. Serial No. 257,562.

To all whom t may concern Be it known that we, J osnrn H. WILSON, GEORGEW. DIxor, and "WILLIAM EARL MOLAUGHLIN, citizens of the United States,and residents of Middletown, Butler county, Ohio, have invented certainnew and useful Improvements in Metal-Working Machines, of which thefollowing is a specication.

This invention pertains to a machine for performing cutting work on longpieces of metal, and, while machines embodying our invention are adaptedfor a variety of work, we have thought best to illustrate our inventionas embodied in a machine for Inachining multiple-throw cranks, such, forinstance, as are employed in steamships having crank-shafts Weighing anumber of tons.

Our invention will be readily understood from the followingfdescriptiontaken in connection with the accompanying drawings in which Figure 1 isa front elevation of the exemplif ying machine:

Fig. 2 a plan of the same:

Fig. 3 a vertical transverse section of the some, in the plane Vof linea of Figs. 1 and 2:

F ig. 4 an elevation of the chuck side of the chuck mechanism:

Fig. 5 an elevation of the cam side of the S'ctlll I Fig. 6 a verticalsection of the same in the plane of line b of Figs. 2, 3, 4 and 5:

Fig. 7 a side elevation of the front miller:

Fig. S ar vertical Section of the same in the plane of line c -Of Figs.1 and 2:

Fi g. 9 a plan of the mechanism for giving angular feeding motion to thechuck, the cam appearing in horizontal section in the plane of line d ofFigs. 5, 6 and 10:

Fig. l0 a side elevation of the same, parts appearing 'in verticalsection in the plane of line c of Figs. 1, 2 and 9:

Fig. 1l a vertical section of a. part of the same in the plane of line fof Figs. 1, 2 and 9 g Figs. 12 to 16, inclusive, diagrams indicatingcertain steps in the progress of work being done 4by the machine:

Figs. 17 to 21, inclusive, diagrams Illustrating certain act-ions on thepart of the cutting-tools, the work being operated upon appearing invertical transverse sectionin the plane of line ,f1-oi Figs. 12, 14, 15,18 and 20:

Fig. 22, a rear elevationV of ya portion of the table-adjustingmechanism:

Fig. 23, a. vertical section of a'portion of the mechanism for givingangular feeding motion to the chuck, the Section. a pearing in the planeof line h of F igs. `1 an 2:

Fig. 24 a face view `of-an` exemplify/ing swing center:

Fig. 25, a front elevation of the same :and

Fig. 26, a vertical section of the bed, in the plane of line z' of Fig.2.

A diversity of Scales is employed in the drawings and, in somecases,planes are illustrated in some abnormal relationship to each otherfor the purpose ofsimplifying and clarifying the delineation.

In describing the exemplifying form of this invention, the plan willbefollowed of first describing details of construction, foli chinos thedescribed order of procedure is subject to modification in the order ofevents with regard to a given example of product, .Ge'nerclorganization.

In the drawings, giving particular atten# tion to Figs. 1, 2 and 3 l,indicat'the bed of the machine, forming a long fixed guideway:

2, a table fitted to slide thereon, the connection between the table andbed being of dovetailed character: V 3, a puppet secured to the tableand extending up therefrom and ada tedto serve as a support for one`endof a ong piece of work, a crankshaft for instance,A the puppet in theillustration having the general form Of the tailstock of a lathe, withits endwise adjustable spindle and dead center carried by it: f

4, a second similar puppet carried by the table, this secon-d puppetbeingndaptfed to be Inovedend'wise upon the tab-le and secured rigidlythereto at a selected point:

5, a shackle anchored (at one end` and adapted for temporary connectionwith the a piece of Work supported by the two puppets ,andtorotate theWork upon the two de centers; v

7, a cutting too'l, speeieelly an end mill carried by a. fixed housingdisposed et one side of the bed between the rotaftorfwndwh of thepuppets, this tool being cepwble of adjustment pto ,and kfrom vthe axisof the tn'nehlne, "mfl' 'cpllb'leialso f adjustment to and from therotator: mdf;

8, a. second similar tool similarly mount at the epposte siiue' of, themwehisne;

The puppetsaretoisuppoi't the "Work While theurotamr gives itmnglhlsarmotion and one oribotb tools operate ngpomt. The puppets areto' bemdeisted the ptoper distance-.apart to suittheulehgtlm ofi theWork@ im han@ :and initllisimdg'mstmentenembothroffthlefpuppets may bemoved upon the table, thewghitfis prefeewhle ftmt theA puppet .et @the:i1-:ight E be perltmemtly-fixedf tothe tebileienditil of theadjustments begeietedb'y thefpuppet at the left. Previsione ismasdfgnswill beflater exllainedpfvr sliding theitabie by'pvoru'erV or and.Loobingmt *the parte asshown in Fig. unid assuming thatthe liefthendpuppet is to Ibe iven aoeltain ptositiion upon the table, theta eamaybeshi deaths rigit, thefleftlmnitl puppet siding-with fit; the 'tajbte muybe :stopped and theipeppet ileeseeed upon thezliislegfthe sheoktlemay beengaged vthe-rpmippetg tlffreteblenmey ytheir tbe shifted ier'rdmsewhile the puppet' is stationery g, aandirthe puppet msalgfdheini ibemade. fest to dietabe; amd u'ns,linleflrilec-l.vv 'hfe WonkA may their:beseturebetweerr the two' dead centers, in the same me ner as Workwould be placed in an ordinary the, lhdifter it has thusbeen'rsewrerlitrmay, by erendwi'se mdjustment of the table.' e passed'bank or forth' thmufgih the rotator so' tient the ehu ck thereof maygrip the work rad;v any desired puntlen tslen'gtsh. It will, ofcourse,be understood theft during these falgiustments the chuck will not benumbing, and it is to be Y' dbserved :that the `puppets,are of such eemthetthey may poke their noses 17h-rough the Mater iinfssuehmaamerf-.thalt the entire hslsvgth eftlxelwmekz my befetposed to thelett of 'the 'chunk Tte rotator am v1:8

In the drawings, referring espeeieliy to Figs. #,im'd 6:1-

' 9, fndeetesfzi housingdispesed :is4 e'. bridge over' the 'tbeJ sind ilorming ra, lnge foireierler bearin with its exis eoihciding with vtheexis d diaet-machine: f v

10,` ai holiiewffwlmn-wheel fjoumeied in' .this housing: l

11, n woher 'engwgingf the iwemi'ewheel i* 12,'4he shaft-df the worm,ada/plied to be tamed b :power im'd by `ham-cl: Y

lf3, s eg' secured to bher'ght ieee ef 'the housing, and forming uportion of the general beori of the worm wheel:

14, e divide'dehuek seouredto the wor1n- 'wheel at :the lefiihzipllfafce of the housing, Which'h'usi'ig will 'beherein'after referred to-as theeeliuck housing:

the lower division of the ehurk:

16, theupper division of the ehuok, these divisions 'being' secured tothe Worm-Wheel in :such mennen that the upper division muy be readilyremoved: and

17, set-scre'wsfoerried bythe chuck und presenting theilrzpdinhs'inwm'dlund adepted `to grip e piece of work'e xtenc ing through the rotator andits chuok.

The `eh-uok :is 'to-be of n character suited to the work iin hund andchucks of selected size andy character ame assumed as bei-nguvuifliable'ior. attaehn-ient to the worm-W heel. The-chuokrillustnatod-is fin the form of a box with the set-screws throughits wells, adaptedfo1eleeli=ng YWfithie-flut slub 'from which u crafnkis to be formed. The ehuvk is divided in order te facilitate the,placing of `the work. By setting the ro'utor 'with the upper divisionoff the ehuok upward, that division may be removed from the Wow-urigen,to be repiuoede'fter the work has been pil-need in proper relationship`to the two puppets. Asgisin, in 'the production' 01E multiple-throweRank-'shafts `the removebility ofthe upper portion of the chuck willgreatly ferilitate thefzndjlustmeut of the Wonk endwise in the chuck.

Angularfef'd'ng mom of the chuck.

the drawings referring particularly to Figs. 1, 2,8, 4, 5, 6, `9, 110,11 eind 23 18, indimites :r power-sh:1f-t,` illusirated es being drivenb3* el. motor:

19, d verticul shaft ilievel-geured to it:

*20, u lection-plete carried by the upper end of this shaft:

21, a friotionshuft disposed erro-ss the fictionfplete.:

22, a frictionsisk engaging the frictionplete, a'nd Spliimed to AtheVfriction#shui-ft 23, 'e 'hander-heel for turning the frictionshaft:

24, u Worm mi thefriotion-shut:

#25, a wormigear:

1245, the shafft-olffthe worin-gear, loose in the Wornrgear:

27, connecting this shaft with shaft @Which 'is Worin-)gewred to theehfuek:

28, a. hund-Wheel for turning shaift 26 by hund, normanliyloese lWirthieferenee to the shaiit: und

29, a. clutch Whiohccenfbe throw-n by hand to putsheft '26 into lookedrelationship either Withlthewomn-geer 25 or with the hand-Wheel 28.

As lthe power-sh-at ftunns it causes the friction-shaft to tum aft itate according to the radial adjustment of the friction-disk on thefriction-plate, the worm-gear 25 turning at corresponding rate. If theclutch 29 be thrown one way it will'lock the Wormgear to its shaft andcause the chuck to be rotated. If, however, the clutch be thrown in theother direction it will leave the shaft free from the Worm-Wheel butwill lock the shaft to the hand-rig so that 'by means of hand-Wheel 28the chuck may be turned at comparatively rapid rate. Proceeding withthese iigures of the drawings 30, indicates a cam removably bolted tothe back of the Worm-gear which carries the chuck:

. 31, a bell crank-lever having one end in engagement with the peripheryof this cam and having its other end in engagement With thefriction-disk 22:

32, a spring on the friction-shaft urging the friction-disk in thedirection opposite to the one in which it is moved by thebellcrank-lever 33, a, bolt connecting the bell crank-lever with a xedsegmental slot and adapted to lochl the bellcrank lever against beingoperated by the cam: and

34, a bolt for locking the two arms of the bellcrank-lever in adjustedrelationship to each other.

When the friction-plate is released from the friction-disk then thechuck may be turned by hand b means of the hand-wheel 23. However, w ienthe friction-disk and friction-plate are in eng ement with each other,and the clutch is t rown to connect the Worm-gear with its shaft, thenthe chuck Will be turned by power slowly at certain"` rate. In theoperation of an end mill, by j which is meant a mill having longitudinali teeth as Well as end teeth, and the work is"' fed angularly withreference to the mill, it' is desirable, 1nv many cases, to. vary therate' o-f angular feed With some reference to the length of the radialcut being produced upon the work by the mill.v Thus, for instance, thecheek of aerankshaft may present very little cnt radial to the shaftinone angular position of the cheek, and thus call for acertain degree ofangular feed, While in another angular position of the cheek the cut maybe ofanuch greater radial extent and call for a. slower rate of angularfeed. In the present instance, the cam is assumed as having beencontoured in recognition of the desired variation in the rate of angularfeed, and this variation it"automaticall eifeets by shifting the`friction-disk radially on the plate, so that at one stage of rotationof the chuck the feed fwill be rapid and at another stage comparativelyslovv.` y

By locking the bellcrank to the4 segmental slot, the feedwill be freefrom domination by the cam. By locking the two arms of thebellcrank-lever in adjusted relationship lo Movements of the table.

yIn the drawings, referring particularly to Figs. 1, 2, 22 and 26:-

35, indicates a shaft driven by the powershaft:

, 36, a friction-plate thereon:

37, a sha-ft crossing the bed o the machine ,38, the bull-Wheel shaftwhich drives the table:

39, gearing, of Worm type, connecting these tWo shafts:

40, a friction-disk engaging the frictionplate and splined on shaft 37:and

41, a handle on shaft 37.

VVhenthe friction-disk and friction-plate of the table-drivingmechanisn'i are engaged, then the power-shaft may impart travelingmotion to the table in effecting what mightbe called the grand movementsof the table, as has been heretofore referred to. and the rate at whichthe table is shifted cndwise ma `be governed by adjusting the frictiondis upon the friction-plate. The finer movements of the table may beeffected by hand, by disconnecting the friction-plate and friction-diskand employing the handle 41. ,The endwise adjustment of the table, andVthe Work carried by it, may thus be effected With nicety, and when thctable has been proierly adjusted enchvise it becomes there loc ed by thegearing connecting the 'two cross-shafts.

T he mtiers.

Particular description Will be given only aof the miller on the frontside of the niachine, the one on the olher side being like `it `thoughin Fig. 2 the miller on the far side fo the machine is shown withoutmany of its adjuncts. In the drawings, and referring particularly to.Figs l, 2, 3, 7 and 8 42, re resents a sole-plate at .the front side oft e machine:

43, a sub-table mounted to slide on the sole-plate to and from themachine:

l4.4, a. handwheel for adjusting the subtable on the sole-plate:

45, a miller-housing fitted to slide on the sub-table in a directionparallel with the lengthY of the machine:

A6, a ,hand-Wheel for adjusting the housing on the sub-table:

4;?, al spindle-bearing with its axis disposed in a vertical plane atright angles to the axis of the.V general machine:

48,' trunnions connecting the spindlebearing `With the miller-housing,their common' axis being' horizontal and intersecting the axis of thespindle-bearing: l

therein by the niill and having sharp corners where the bottom of thegroove joins its side walls: and

63, a similar groove-with round corners or fillets where the bottom ofthe groo-ve joins its side walls.

If the mill be a cylindrical one, that is to say with a flat end,and ifit be adjusted with its axis intersecting the axis of the work, then thegroove produced by the niill will be such as indicated in Fig. 18, thereheilig no fillets. But if the niill be angularly adjusted only with itsaxis coincidin with the Vline 60 then, while the groove will e milledthe full diameter of the mill, the same as in Fig. 18, the cylindricalpart of the reduced portion will have a length equal only to the chordof lthe circle of the mill taken at the line of intersecting the centerof the work, the balance of the reduced portion, at each of its endswhere it joins the side Walls of the groove, being iilleted as shown inFig. 20. By this simple means a truly cylindrical cutter may producefilleted or unfilleted corners, as desired, by simply adjusting theangle of the mill.

Afa ecmplz'fyring program of work. See Figs. 12 to 16 inclusive.

Let it be assumed that a three-throw crank-shaft is to lbe formed in ourmachine from a slab, such as is illustrated in Fig. 12, in which (Si,and 6G represent the zones oi' the slab which are to form the throws ofthe crank-shaft, the intermediate zones to Jform the intermediatejournals, the complete shaft 'being represented by Figs. 15 and 16.

The slab would be centered and placed in our machine and adjusted in thechuck for gripping one of the zones, whereupon the mills would operateupon the rotating work and produce the two intermediateY journals, asseen in Fig. 14. The work would then be reiiioi'ed and heated andtwisted to bring the three throws into proper angular relationship,after which the work would be again placed in the machine and, ifdesired, all the journals and the collar completed. Swing centers 64,such as illustrated in Figs. 24 and 25, would then be applied to thework. which would now be carried on the dead centersV 65 while engagingsuch selected centers in the swing centeis as are appropriate to thewrists of the crank-shaft. Then, while appropriate parts o the work aregripped by the chuck,. the throws will be milled out, in succession, andthe wrists formed, and in the forming of the journals or the wrists`fillets in the cornersinay be provided or omitted, accordingV to theangular adjustment of the mills.

It will of course be understood that the exemplifying machineparticularly set forth constitutes but a single example of theembodinientlof our invention. We have simpl) explained the principle ofour invention and the best mode in which we have at present contemplatedapplying that principle.

We claimiz- 1. A metal working machine comprising, a bed, a reciprocabletable thereon, a pair of puppets supported by the table, a chuckhousingbridging over the table between the two puppets, a rotatable hollowchuck -mountediin such chuck-housing, and a tool disposed at one side ofthe bed between the chuck and one of the puppets, combined substantiallyas set forth.

2. A metal working machine comprising, a bed, a reciprocable tablethereon, a pair of puppets supported by the table, means for adjustingone of said puppets to and from the other on the table, a. chuck-housingbridging over the table between the two puppets, a rotatable hollowchuck mounted in such chuck-housing, and a tool disposed at oneiside ofthe bed between the chuck and one of the puppets, combined substantiallyas set forth. i

3. A metal working machine comprising, a bed, a reciprocable tablethereoina pair of puppets supported by the table, an endwise adjustabledead center carried by each puppet, a chuck-housing bridging over thetable between the two puppets, a rotatable hollow chuck mounted in suchchuck-housing, and

a tool disposed, at one side of thel bed between tlie chuck and one ofthe puppets, combined substantially as set forth.

4. A metal working machine comprising, a bed, a reciprocable tablethereon, a pair of puppets supported by the table, one of said puppetsbeing adjustable on the table to and from the other puppet, a shackleanchored at one end and adaptedfor connection with the adjustablepuppet, combined substantially as set forth. i i

5. A metal working machine comprising, a bed,V ay recipii'ocable tablethereon,l a pair of puppets supportedfby the table, al chuckhousingbridging over the table between the two puppets,` a rotatable hollowchuck` two puppets, a rotatable hollow chuck mounted in such*clnick-housing, .a powershat, transmitting mechanism between saidpower-shaft and the table for moving the tablc endwise by power, aspeedchanging mechanism involved in said transmission and serving toregulate the rate. od endwise motion orffthc talble, amo-olf disposedfatone sidiJ ofr the `bed betweenitll chiuck :and one ot' the pniplpets, ahandJoperableshaft in such transmittin mechanism, and gearing ot `Wormtype 'tween the Y eroible shaft and the 'table -to serve in yl'oclizzmg.the' tabl-c in adjusted' position, combinedy substantial'yasset forthi7. A metal Working Amachine comprising, a bed, arecipirocabletablethereon, a pali' of puppets supportedby the table, a chuckhousingr@bridging` over the table between the `two puppets, ja holllow'-rotatalisleI wormgeur jourhaled in the chuckhousi'ng, -a hollow chuckmounted removably on said :worm gear, and atool disp-osedat one side ofthe bed botweemthe chuck .and one oithe puppets, combined substantiallyas set forth@ 8.- Ai metalworking' machine comprising, a bed, areciprocable table thereon, span' ofpuppets su 'ported:byfitilrieytabie, a1chnckhousingrbridg" -nv' over the table4 betweenthe twopuppets, 'a-v oliw. rtatnlble-wornkgear journaled in thefchuck-hfousina` removab] chuck fonmed in separatelsectionssecui` d to s'aid *wormgear, and aftool disposed at one side of 'thebed -between' the chuck'jand one of the puppets, combined substantially as set forth.-

9. A meta-l workinglmachnecomprising, a-bed-,,af reciprocableltable"thb'reon, `a pair of puppets supported by the tatie, a chuckhonsigbridging` orer'theftahiebetween the tivo piipets,iibllofwfroatableworm-.gear jou rnnld in" the clu-ck-hun'sing,A a lyhntil'jw chuck-r; mounted 'Temovabijr onl 'saidI wormgeai',`aring/'secured tonfaceof' the chuckL housing and forming a patothebearingfarne jsui-faitsastiene-, @ne a. tool dis Y lat one sideofihie" betweenin 'CH .fac .one olf tHe vente when substantia as setrth.'

d0. Aiiie al woijkin'gmachine comprising, and, a reist-@abnehm aerea, a,pas 'if Puppets 'Sr byv the fwbsi e Ohh@ housing brid "n over the tnbfieg 'etweenthe twobets aollowro worini-l Yfaijournale f' inthec'huckfh ifusing-,j ahi) ow chuck j sin-veur assassina worn;- gsc fha' @ongewenstother@ chu k, set` 4screws A'ljdct'ingthror 'hf said ws.nia tar-di pas@ a ens-'n (if uit bsd between thechupk anden? aff spar'-pt, Crrlbind nhaiitisll'y. 21S fsrbhiachine comprising iilbs'haskesslenamens therein, a, power shaft, transmission nicchianism disposed`between the poweri shaft and the chuck, a speed changing devicedisposed in saidtransniittingl mechanism and adapted to vary theproportionate raue of turning of the power shaft and the chuck, andmechanism operated; b.. the rotation of the chuck fon automatica -lyadjusting said speed chan-ging device, combined substantially as setforth.

12. .A metal Working machine comprising, a. chuck housing, wrotntaiblechuck mounted therein, va power` shaft, transmission mecha nsm, disposedfbetween Ithe -poweir shafti and thechuclc, a speed changing devicedisposed in said transmitting mechanism and adapted to vary theproportionate rate of turning of the power shaft-and the chuck, a camturning withthe chuck, and `means operated by thelcarn for automaticallyIaltering the speed changer, combined substantially as set forth. 13. Ametal working` machine comprising, achnck. housing, a rotatable chuckmounted therein, la-fpower shaft, transmission mechanism disposedbetween the power shaft and the chuck, a speed changing device involvinga shifting changing a cam rotating withY the chuck, Mand a bell cranklever having-Lone of. its, ends engagingsaid cam and its other endengagingV said shifting disk, combined substantial'l-yy asset forth.

14; A metal working machine comprising, afchuck housing, a rotatablechuck mounted therein, a power shaft, transmission mechanism dis osednbetween the power shaft and the chuc aspeed changing device involving a'shitin' fspeedchanging disk, a cam' rotaining with 'the' chuck, a bellicrank lever having one of its ends engaging saidcam and its otherI endengagin said shifting disk, and aiiked' segmentl an F screw* for`locking t-h'twbelli` crankl lever out of domination by the cam',combined substantially as set forth. i5.' A' metal Working machinecomprising, a3chuckihbusing, a rotatable chuck mounted therein, a'ppwer"shaft,` transmission mechad'isp'fo'sed'heltween the power shaft and tefch'tc af'speed changing device involving a siiftingfspeed changingdisk, a cam rotating Withthe chuck, aY bell crank lever having oneof'its ends engaging said cam and its other end-l engaging said shiftingdisk, and means for adjusting the two arms o"the bellcrank. withreference to each other, Combined substantially as set forth.

16;:A Aj metal` working machine comprising, aichpck housing," arotatablechuck mounted therein, a pwvei"l shaft,' transmission mechanisrndisposed *between the' power shaft and thef a speed changing deviceinvolving a shiftingfspeed ch'angin disk, a cam rotating'withL hechuck,a bel crank lever hrayipgsoneuoflits ends engaging Said cam and itsother end engaging said shifting disk, und aspring urgin the shiftingdisk in opposition to its motion as afi'ectediby the cam, combinedsubstantially as set forth.

17. A metal working' machine comprising, a chuck housing, a hollow chuckmounted for rotation therein, a power shaft, transmission mechanismdisposed :between the power shaft and the chuck, a loose gear i11-volved in said transmission mechanism, a hand shaft for turning thechuck by hand, and a clutch adapted to connect the loose gear positivelyinto the transmission mechanism, combined substantiallyas set forth.

18. A metal `working machine comprising, a chuck housing, a hollow chuckmounted for rotation therein, a power shaft, transn'iission mrchanismdisposed between the power shaft and the chuck, a loose gear involved insaid transmission mechanism, a hand shaft for-turning the chuck by hand,and a clutch adapted to connect the loose gear positively into thetransmission mechanism and to lock the hand shaft to the chuck drivingmechanism` while said loose gear is disconnected Vfrom the power shaft,combined substantially as set forth. j

19. A metal working machine comprising, a chuck housing, a hollowworm-gear journaled therein, a hollow chuck .mounted on the worm-gear, aworm and wormear shaft for turningthe worm, a worm-w ieel loose withreferenceV to said worm-wheel shaft. a wormfand hand-shaft for turningsaid loose worm-gear, a hand-shaft loose with reference to said looseworm-gear, and a clutch adapted to be thrown in either direction to lockeither of said hand-shafts to the worin-shaft which drives the chuck,combined substantiallyas set forth.

20. A metal working machine comprising, a bed, a reciprocablettablethereon, a pair of puppets supported by the table, a chuckhousingbridgmg over the table between the two puppets, a rotatable hollow chuckmounted in such chuck-housing, a tool disposed at one .side of the bed,and mechanisi i for adjusting the tool lengthwise of the be combinedsubstantially Vas set forth.,

21. A metal working machine comprising, a bed, areciprocable tablethereon, a pair of puppets supported by the table a chuckhousingbridging over the tablebetween the two puppets, a yrotatable hollowchuck mounted in such chuck-housing, a tool disposed at one side ofthevbed, and mechanism for adjustingthe tool to and from the bed,combined substantially/es setforth.l

22. A metal working machine comprising, a bed, a reciprocable tablethereon, a pai-r of puppets y supported by thev table, a chuckhousingbridging over the table between the ,two puppets, a rotatable hollowchuck mounted in such chuck-housing, a tool disposed at one side of thebed, mechanism for adjusting the tool length-wise of the bed,andinechanism for adjusting the tool to and from thc bed, combinedsubstantially as set forth.

23.l A metal working machine comprising', a bed, a reciprocable tablethereon, a pair of puppets supported by the table, a ehm-khousingbridging over the table between thc two puppets, a rotatable hollowchuck mounted in such chuck-housing, a tool disposed at one side of thebed, a tool disposed at the opposite side of the bed, and mechanism foradjusting one of said tools lengthwise of the bed independently of theother tool, combined substantially' as set forth.

24. A metal working machine comprising, a bed, a reciprocable tablethereon, a pair of puppets supported by the table, a chuckhousingbridging over the table between the two puppets, a rotatable hollowchuck mounted in such chuck-housing, a tool disposed at one side of thebed, a tool disposed at the opposite side of the bed, and mechanism .foradjusting the two tools length-wise ofthe bed independently of eachother, combinedY substantially as set forth.

25. A metal working machine comprising, a bed, a reciprocable tablethereon, a pair of puppets supported by the table, a chuckhousingbridging over the table between the two puppets, a rotatable hollowchuck mounted in such chuck-housing, a sole-plate at one side of thebed, a sub-table fitted to slide-on the sole-plate, a tool-housingfitted to slide on the sub-table, a tool carried by the tool-housing,mechanism for adjusting the sub-table on the sole-plate, and mechanismfor adjusting the tool-housing on the sub-table, combined substantiallyas set forth.

26. A metal working machine comprising, a bed, a reciprocable tablethereon, a pair of puppets supported by the table, a chuckhousingbridging over the tab-le between the two puppets, a rotatable hollowchuck mounted in such chuck-housing, a sole-plate at one side of thebed, a sub-table fitted to slide on the sole-plate transversely of thebed, mechanism for adjusting the sub-table on the sole-plate, atool-housing fitted to slide on the sub-table length-wise of the bed,and mechanism for adjusting the tool-housing on the sub-table, and atool carried by the toolhousing, combined substantially as set forth.

27..A metal working machine comprising, a bed, a reciprooable tablethereon, a pair of puppets supported by the table, a chuckhousingbridging over theI table between the two puppets, a rotatable hollowchuck Vmounted 1n such chuck-housing, a tool-housing disposed at oneside of the bed, a spindlebearing carried by the tool-housing, a spindlejournaled in spindle-bearing, a tool carried by the spindle, and meansfor rotating thc spindle, combined substantially as VSet forth.

28. A metal working machine comprising, a bed, a reciprocable tablethereon, a pair of puppets supported by the table, a chuckhousingbridging over the table between the two puppets, a rotatable hollowchuck 'mounted in such chuck-housing, a ltool-housing disposed at oneside of the bed, a spindle-bearing carried by the tool-housing, aspindle journaled in the spindle-bearing, a tool carried by the spindle,means for rotating the spindle` horizontal trunnions con necting thespindle-bearing with the toolhousing and arranged aral'lel with `thebed, und mechanism for a j'usting the spindlebcaring on its trunnions,combined substantially as set forth.

29. A metal working machine comprising a bed, a reciprocable tablethereon, a pair of puppets supported by the table, a chuckhousingbridging over the table between the two puppets, a rotatable hollowchuck mounted in such chuck-housing, a tool-housing disposed at one sideof the bed, a spindle-bearing carried by the tool-housing, a spindlejournaled in the spindle-bearing, a tool carried by `the spindle, meansfor rotating the spindle, horizontal trun-nions connecting the spindlebearing with `the toolhousing and arranged parallel with the bed, aworm-gear segment carried by the spindle-bearing, and a worm foradjusting the worm-bearing on its trunnions, combined substantially asset forth.

30. A metal working machine comprising, a bed, a reciprocable tablethereon, a pai-r of puppets supported bythe table, a chuckhousingbridging over the table between the two puppets, a rotatable hollowChuck mounted 1n such chuck-housing, tool-housings disposed at oppositesides efthebed, a spindle-bearing 'mounted in each tool-'housing Yontrunnions arallel with 'the'bed, and mechanism for a justing thespindie-bearings simultaneously, combined substantially as set forth.

31. A metal working machine comprising, a bed, a reciprocable tablethereon, apart of puppets supported by the table, a chuckhousingbridglng over the table between the two puppets, a rotatable hollowChuck mounted in such chuck-housing, tool-housings at each side ofthebed, a spindle-'bearing mounted in each tool-housing on trunnionsparallel with the bed, worm-gearsegments carried by the spindle-bear1ngaworm c arried in each tool-housing for cooperating with the worm-.gearsegments in adjusting the spindle-'bearings on theirtrunnions, and

maman a @telescopic tumbling Ashaiit connecting the two worms, combinedsubstantially as set forth.

32. A metal Working machine comprising, a ibed, `a reoiplocable taiblethereon, a pair of puppets supported Vby the table, a chuckhows-ingybridging `over the 'table between `the two pu ets, a 'rotatable hollowchuck mounted 1n such chuck-housing, and a pair of end mills mounted forrotation and adjustment at each side of lthe bed, combined substantiallyas set forth.

4 33. A metal working machine comprising, a bed, a reciprocable Ytablethereon, a pair ot' puppets supported by the table, a chuckhousingbridging over thetwble between the two puppets, a .rotatable hollowchuck mounted 1n such chuck-housing, a tool-housing disposed atone sideof the bed, a spindle-bearing mounted therein, trunnions connecting thespindlebea-rin with the tool housing and arranged para lel with the bed,a spindle journaled in the spindle-bearing,

va worm-gear on the spindle, a gear on one of the trunnions, connectionsbetween said gear andthe worm rwheel, and means for turning the gear,combined substantially as set forth.

34. A metal workin Vmachine comprising, abed, a 'reciprocabletablethereon, a pair of puppets supported by the table, a chuckhousingbridging over the =table between the two puppets, a rotatable hollowchuck mounted in such chuck-housing, a tool-housing disposed at loneside of the bed and adj ustable to and from the bed and lengthwise ofthe bed, a spindlesbearing trunnioned in the tool-housing, a spindiejournaled in 'the spindlebearing, a vgea'r on one o the 4trunnions,transmitting mechanism connecting said gear with the spindle, a powershaft, and connections from the power sha1-t to said gear, combinedsubstantially as set forth.

35. A metal workingfmachine comprising, a bed, a reciprocable itablethereon, a pair ofpuppets supported by thetafble, achuckhousingI'bridging over the table between the two puppets, a nrotatable hollowdhuck mounted lin such chuokihousing, an end mill disposed at each sideofthe fbed, and means for adjusting said `mills independently `of eachother'length-wiselof the bed, combined substantially as set forth.

36. A metal `working machine comprising, a jbed. a reciprocabl'e tablethereon, a pair of puppets supported by the table, a chuckhousingIbridgingr over kthe table vbetween the two puppets, la rotatable hollowchuck 'mounted In suchchuckhousing, an end mill mounted on horizontaltrunnions at one side of thebed, and means for adjusting said mill onits trunnions lwhile the work supported by said puppets and chuck isstationary, mills on their trunnions while the work supeombinedsubstantially as set forth. ported by the puppets and chuck is sta,-

37.1 A metal worllringbxiaclliine comprising, tional-y, combinedsubstantially as set forth. e be e, reciproca e te e t ereon a pair of 5nppets supported by the table: a chuckousing bridging over the tablebetween the two puppets, a rotatable hollo'w chuck WILLIAM EARLMGLAUGHLIN' mounted 1n such chuck-housing, an end mill Witnesses:

mounted on horizontal trunnions at each M. S. BELDEN, L

10 side of the bed, and means for adjusting said J UsTUs VoLmncHT.

00ml o! this potent may he obtelnedror ave cent; each, by addrening theCommissioner o! Intent Wnhington, ID. d."

